CXLE8861是一种升压型DC/DC转换器,具有恒定电流,可驱动白光LED或类似产品。该设备可以从锂离子电池串联驱动多达8个LED。LED电流由外部电阻器(RSET)设置,并由外部电阻器RSET上的反馈(FB)电压(类型:200 mV)直接调节。为确保运行期间的最大安全性,输出具有集成过电压保护,防止在某些故障情况下损坏设备。OVP电压可由两个外部电阻编程。
输入电压范围:2.2至6V
可编程LED电流
驱动高达27V的LED
开关频率:高达800KHz
可编程过电压保护
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[ CXLE8861 ]"
目录
产品概述 返回TOP
The CXLE8861 is a step-up DC/DC converter with a constant current to drive white LEDs or similar. The device can drive up to eight LEDs in series from a Li-Ion cell. The LED current is set by the external resistor (RSET) and is directly regulated by the feedback (FB) voltage (typ: 200 mV) across the external resistor RSET. To ensure maximum safety during operation, the output has integrated overvoltage protection that prevents damage to the device in case of some fault conditions. The OVP voltage can be programmed by two external resistors.
The CXLE8861 is available in a tiny DFN3*3-8L package.
产品特点 返回TOP
Input voltage range: 2.2 to 6V
Programmable LED Current
Drives LEDs Up to 27V
Switching Frequency:up to 800KHz
Programmable Overvoltage Protection
Tiny DFN3*3-8L Package
应用范围 返回TOP
PDA
Cellular Phones
Handheld Devices
MP3 Players
GPS Receivers
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产品封装图 返回TOP
电路原理图 返回TOP
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升压型LED射灯驱动IC |
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型号 |
工作电压范围 |
输出电流 |
输出电流精度 |
工作频率 |
调光功能 |
封装 |
|
0.9V-6.0V |
1A |
- |
90% |
1.0 MHz |
PWM调光 |
SOT-26 |
|
0.8V-5.5V |
外置MOS/15W |
3% |
90% |
700KHz |
PWM调光500Hz-1KHz |
SOT-26 |
|
3V-24V |
内置2A MOS |
2% |
90% |
1.2MHz |
PWM调光 |
SOT-26 |
|
2.7V-6.5V |
内置2.8A MOS |
2% |
90% |
1MHz |
PWM调光 |
SOT-26 |
|
2.5V-30V |
内置3A MOS |
2% |
90% |
460KHz |
模拟调光/PWM调光 |
SOP-8 |
|
2.2V-6V |
内置3A MOS |
2% |
90% |
800KHz |
PWM调光 |
SOP-8 |
|
2.2V-6V |
内置3A MOS |
2% |
90% |
800KHz |
PWM调光 |
DFN3*3-8 |
|
10V-35V |
内置3A MOS |
2% |
90% |
800KHz |
PWM调光 |
SOP-8 |
|
4.5V--24V |
1A |
2% |
90% |
800KHz |
PWM调光 |
ESOP8 |
|
3.6V-26V |
2A |
2% |
92% |
400KHz |
PWM调光 |
SOP-8 |
|
3.6V-26V |
2A |
2% |
92% |
400KHz |
PWM调光 |
SOP-8 |
|
5V-45V |
2A |
2% |
93% |
400KHz |
PWM调光 |
SOP-8 |
|
8V-32V |
内置8A MOS |
2% |
92% |
1MHz |
PWM调光 |
SOP-14 |
|
8V-32V |
外置MOS/36W |
2% |
94% |
1MHz |
PWM调光 |
ESOP-8 |
|
3.6V-36V |
4A |
2% |
94% |
180KHz |
PWM调光 |
TO252-5L |
|
5.0V-36V |
5A |
2% |
94% |
180KHz |
PWM调光 |
TO-263-5L |